Pile wire spoon with exchangeable blade



March 16, 1.937. A GROTH 2,074,053

PILE'WIRE SPOON WITH EXCHANGEABLE BLADE Filed Sept. 19, 1935 Patented Mar. 16, 1937 UNITED sra-'rei ITH EXCHANGEABLE y BL DE Alfred Groth,` Gera. Germany PILE WIRE SPOON W Application September 19; 193'5, September In .Germany inexpensive construction, and highly ei`cient in use. Double-walled pile wire It is furthermore cure the blade after its introduction into the The present invention has for its object the provision of a pile wire spoon or blade holder- With an exchangeable blade avoiding the above on these walls, or by the arrangement of an abutment by means of solder, welding or riveting etc.

serial No. 41,19 19, 1934 The most simple manner of producing such-:a

member would befbybulging the material lof the a recess or stepped part or portion of the blade when the same 1s introduced into the holder and .l

which thus holds the. tion within the holder.

In this manner any damage to the blade when it is introduced into the holder or removed therefrom, is avoided, so that it will be possible to the blade as often as desired and to re-grinding, which has possible with the known means ofv securing the blade within the spoon heads.

These and other objects and advantages of my description thereof proceeds and will then be spe'- cically dened in the appended claims.

In the accompanying drawing forming a material part of this disclosure:

Fig. 1 illustrates a spoon head or blade holder nstructed according to my invention, partly in section and on a somewhat enlarged scale.

Fig. 2 is a horizontal section thereof, and

Fig. 3 is a detail View of a blade.

As illustrated, the spoon head or blade-holder a is composed of the usual side walls b` and c forming together a substantially U-shaped body. 'I'he side walls are firmly united by rivets d and e or the like at their separated and pointed front Rivet d however, leaves between the side removal ofthe blade f.

According to` my invention, one of the side walls b or c only, for instance as shown, side end opposite tol the end havingV between both, the shoulder 7c, and the abuttween both walls, a blade adapted to be introment h. duced between both walls and formed with a The operation of my improved blade holder cut-away portion to be engaged by said projecwill be entirely clear from the above description tion, and a shoulder formed in the holder adapt- 5 by having simultaneously reference to the drawed to be engaged by the opposite end of the blade. 5

ing. 2. In a blade holder of the character described,

It will be understood that I do not desire to two side walls forming a body of substantial limit myself to the exact construction shown and U-shape in cross-section, rivets connecting the described as an example, but that I may make front ends of said walls, one of said walls having 10 such changes therein as come within the scope its material punched from the outside towards l0 of the appended claims without departure from the inside to form an inner protuberance and an the spirit of my invention. outer depression, one of said rivets spacing said Having thus described my invention, what I walls from one another, and a blade having a claim as new, and desire to secure by Letters cut-away end portion and being adapted to be 15 Patent is: Y introduced into the space between both walls and 15 1. Blade holder or spoon for pile wires with removed therefrom, said blade adapted to be enexchangeable blades comprising two spaced regaged by said protuberance, a shouldered portion silient walls, rivets connecting said walls at their formed on said blade against which said protufront ends, one of said rivets spacing said walls berance engages, and an inclined shoulder 20 from one another, and one of said walls formed formed with said walls to be engaged by the 20 with a depression in the material oi its outside cut-away end portion of said blade. forming an inner projection filling the space be- ALFRED GROTI-I. 

